and if you don't have it, get on your ADP rep for not selling it to you, or at the least not making sure you have it if he / she wasn't the original salesperson.
PDA is a good product, but was sold as an additional product because it was developed by a third-party. That's why it is not part of the system, although by now it should have been incorporated into the system. I'm sure they've made enough money off it by now.